General: This Collar is made from thick walled sterling silver Tube
of 10 mm diameter. The collar needs a key to be opened. The
Ring is a magnetically encoded key.
The collar comes with a spare key, since I have implemented a new
more secure lock, which is all but impossible to pick,
even when you know how it works.
Material: Sterling Silver.
Method: Hollow, Constructed.
Mechanics: The hinge is a three leaf type, the lock is a magnetically
Designer: W. van Heeckeren.
Craftsman: W. van Heeckeren.
To Order, You must
include measurements of
the neck at the point where you would like the collar to
The key need not be a ring, and may be like the pendant shown,
or of some other design appropriate to the Key Holder. If a special
design of key is required, please ask for a quote on that.
The collar may be engraved at additional cost.
The attachment ring costs extra.
Price: Collar including key. AUS $ 1900.00
Attachment ring. AUS $ 350.00.
STERLING SILVER is a binary Silver alloy consisting of:
925 parts/1000 Pure Silver and
75 parts/1000 Pure Copper.
Annealing temperature: 750 degrees Celsius.
Melting Temperature: 950 degrees Celsius.